Alternating Cell Layout in Power Storage Modules for Thermal Uniformity
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Solution Overview
Problem
Existing power storage modules experience significant temperature unevenness due to high temperatures at terminal surfaces, leading to inefficiencies and potential issues.
Innovation Solution
The power storage module is designed with an alternate arrangement of single cells, where terminal surfaces alternate with opposite surfaces, enhancing heat diffusion and reducing temperature differences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If single cells are arranged with terminal surfaces facing the same direction, then the structure is simple and easy to manufacture, but temperature unevenness increases significantly
Solution Approach 1:
The patent applies asymmetry by alternating the orientation of terminal surfaces between adjacent single cells. Instead of all terminal surfaces facing the same direction (symmetric arrangement), the invention alternates them between facing directions, creating an asymmetric pattern that promotes heat diffusion and reduces temperature unevenness while maintaining manufacturing simplicity
2Device complexity
If terminal surfaces are concentrated in one area, then the structure is compact, but local temperature becomes excessively high
Solution Approach 1:
The patent applies local quality by ensuring that terminal surfaces are distributed throughout the stack rather than concentrated in one area. Each local region has terminal surfaces from different cells facing different directions, creating a more uniform temperature distribution across the entire power storage module while maintaining structural compactness
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively reduces temperature unevenness within the module by allowing heat to dissipate more evenly across the cells, improving efficiency and performance.
Implementation Method 1
heat can be diffused from the terminal surface of one single cell to the opposite surface of the other single cell
Data Source
AI summary
A power storage module includes a plurality of single cells. The plurality of the single cells are stacked in a stacking direction. Each of the plurality of the single cells includes a case. The case has a rectangular-parallelepiped-like shape with six outer surfaces. The six outer surfaces include a terminal surface and an opposite surface. The terminal surface is an outer surface, among the six outer surfaces, to which a positive electrode terminal and a negative electrode terminal are provided. The opposite surface is an outer surface, among the six outer surfaces, that is located opposite to the terminal surface. Each of the terminal surface and the opposite surface is parallel to the stacking direction. The plurality of the single cells are aligned in the stacking direction in such a manner that the terminal surface alternates with the opposite surface.